Question 139Motor Plants - Assistant Engineer

The correct answer is B) 'M'. The diesel engine water inlet jumper illustrated in the image MO-0122 is represented by the letter 'M'. This is the standard designation used in marine engineering diagrams and schematics to identify the water inlet jumper, which is a component that connects the main cooling water inlet to the engine. The other answer choices are incorrect because 'W' is typically used to denote the water inlet, 'N' is not a common designation in this context, and '14' does not correspond to the specific component being asked about in the question.